Improvement in steam-engines



l partly in section:

inafter referred to:`

i The object of my' invention is' toecono'mize in the quantity of steam consumed by a steainfengine, by,

e pipes B and C.

wenn

A new am DANIEL: LEE, oF-BOSTON, MASSACHUSETTS. e'

. 13mm man: 1Y0. 90,110, zaad May 18,1869. l

l' '.lhe Schedule referred to in these Letters Patent and makingpaxt of the same.

`Figure 1` represents a general view of my invention,

Figure 2 is 'a sectional View of a modication, hereutilizingthe whole ora portion of the exhaust-steam, instead of allowingit to escape, thereby economizing e in fuel, and reducing thefexpense of running a steamengine. .i

'Ihe nature of myiuveution consists in acombina- `tion of devices for takinggthe steam, as it leaves the exhaust-pipe, and bringing itincommunication with the direct current of steam passing from the boiler to the cylinder, in such a manneras to create a current of. steam alternately through the front and rear, or

i e upper and lower ends of a cylinder, and the pipes `lead- `ing to and from its To enable others skilled in the `art to which `my f invention appertains, to make Vand use the same,

I will proceed to vdescribe, its construction andy opera,-

` tion.

`In the-drawings i f `A represents the cylinder of a steam-engine, and

B, the pipe through which steam `is conducted to the -cylinder from theboiler.

C; is a pipe'leading from the exhaust, and connecting with the pipeB by a four-way joint, D, as shown.

is a vacuum-chamber, also connecting with the pipe B by the four-Way joint D. l

F is a receiving-chamber, connecting with the; pipe C by a three-way joint, Gr. A Y i l e .Within the pipe B is attached, as shown in g. l, a

short pipe, b, the diameter of which `is suiciently less than thatof the pipeB to allow a freepassage of air and steam around it,and at4 thesame time proporf tionately increase the velocity of the steam passing jthrough it'; or `the pipe B maybe made tapering in form, asshown in fig.` 2, for thesame purpose.

e The. pipe b, or thesmall endof the pipe B, extends' a short distance beyond the point of junction ofthe Within the pipe C,near the lower portion of the joint G, .is a puppet-valve, c, and at the upper end of said pipe C is anotherpuppet-valve, d.` e

` i Within the receiviug-,chamberF is a' piston, H, tor

which .is attached a tubularrod, I, the lower end of l `which opens `into the chamber F, and on the upper K Beit known that I, DANIEL LEE-of Boston, in the. county of Suffolk, and `State of A`li'dassachusetts, have invented a newfand useful Improvement. in Steam- Engines; and I dohereby declare `that the following isa full, clear, and exact description thereof, reference being.. hadtothe accompanying drawings, in. Which' `end of which rests a weight, J, provided with atapering socket, s, to receive said upper end.

The operation of my invention is as follows:

' `'Ihe e steam is conducted from the boiler, through the pipe B,drectly to the cylinder A, the puppet-valve' d preventing the entrance of any steam into the pipe C from the pipe B. f

After acting upon the piston inthe cylinder A, the

steam is discharged through the exhaust-pipe, passing' Sinto the pipe O, and causing thepuppet-valves c and d to rise, and allow the exhaust lsteam to pass into the l Vvacnuiin-chamber Erand receiving-chamber F.

If the quantity of exhaust steamishould be more than sutlicient to ll the vacuum-'chamber E and receivingfchamber F, after forcing the pistou Htc the" upper end of the chamber, the .surpluspasses through the tubular rod I, and lifts the weight J, the conical form of the socket s allowing it to escape. f

AThe velocity of the steam passing throughlthe'pipe, .j

b createsa vacuum at the point of junction of the pipes B and C, vand in the vacuum-chamber E.

When the engine is taking steam, the direct current passes through thepipe vB with such strength and rapidity asY to take with it the steam in the vacuumchaniber E, lifting the valve d, andtaking alsoa portion of the steam from the pipe 0, thevacuum thus `created being immediately illedfrom the exhaustpipe.

When the engine is not taking steam, the pressure of steam in the pipe Band chamber Eis suicient to keep the valve d closed, and prevent the escape of any steam by-way of the pipe C and chamberv F.

XVhen the steam is being exhausted, it passes into the vacuum-chamber 'E and receiving-chamber F, the'l surplus escaping by way of the tubular rod I, as here# inbefcre described. f `When the steam is not being exhausted, the piston H, impelled by the combinedaction of the Weight J and the atmospheric pressure, tends to compress `the steam, and force it.;into the steam-pipe B and vacuumchamber E. v

-Any reaction or back pressure ofthe steam in the chamber F, caused by the koperation of the piston-H,

Vor from any other cause, isprevented from exerting WhatI claim as new, and desire to secure by Let-` as shown and described.

1, Utilizing the exhaust-steam in a steam-engine, 4. The receivin-ehamber F, arranged substantially by bringing it; in communication with the live steam, as specified. v and producing a current, by the mechanical devices, 5. The weight J, tubular rod I, and piston H, in

substantially as shown and described. combination'with the valves c and d, substantially as 2. The vacuum-chamber E, arranged substantially shown and described.

as specified. DANIEL LEE.

3. The pipe b, in combination with the vacuum- Witnesses: chamber 4E, pipe O, and valves c and d, substantially E. R. BROWN, 

